If you bought the developer version of the software (our model number NET-CHT_DEV1) that legend will always be present. This to make sure that you do not redistribute application programs that use the software, when you only have a developer license.
In order to redistribute products that use the QCChart2D library you must have a redistributable license (our model number NET-CHT-RED). When you redistibute a product using this license the Dev.R2.N string will no longer be present. The different licenses are discussed on our web page at http://www.quinn-curtis.com/DotNetProducts.htm.